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COAXIAL CABLES
NOMINAL DC INSULATOR NMOINAL SHIELD NOMINAL NOMINAL NOMINAL
TYPE LARSEN BELDEN STANDARD WEIGHT AWG WIRE RESISTANCE NOMINAL O.D. SHIELD SHIELD NOMINAL JACKET IMPEDANCE VEL OF CAPACITANCE
CATEGORY PART# SUPPLIER PART# DESCRIPTION LENGTH (FT) (1000 LBS) STRANDING DIAMETER (OHMS/1000’) INSULATION CORE O.D. (IN) O.D. (INS) MATERIAL COVERAGE RESISTANCE MATERIAL (OHMS) PROP PF/FT
RG-174 RG174 Belden 8216 26 Solid Foil/Braid-Poly-Miniature Cable OD.054 1000 9 26 0.019 Bare Copper 9.7 POLYETHYLENE 0.05 0.11 Tinned Copper Braid 90% 10.3 Black PVC 50 66% 30.8a
RG-316 RG316 Belden 83284 26 Stranded Braid/Braid TEF Teflon 500/1000 10.5 26 0.020 Silver Coated Copper Covered Steel 84.1 TFE Teflon 0.06 0.098 Silver Coated Copper Braid 95% 6.5 White FEP 50 69.5% 29.2
RG-58A/U CX Belden YR27132 20 Stranded Braid/Poly 1000 24 20 0.035 Tinned Copper 21.5 Solid Polyethylene 0.11 0.193 Tinned Copper Braid 95% 4.1 Black PVC 50 66% 30.8
RG-58/U UD Belden YR29741 20 Solid Foil/Braid-Poly-Low Loss-2500 MHz 1000 25 20 (solid) Bare Copper 12.6 Polyethylene 0.116 0.195 100% Duofoil & 95 Tinned Copper Braid 100% 3.8 Black PVC 50 66% 30.9
RG-58A/U DS Belden YR22688 20 Stranded Foil/Braid-Low Loss 1000 21.6 20 0.037 Tinned Copper 14.5 Foam Polyethylene 0.114 0.198 Duofoil + 85% Tinned Copper Braid 100% 5.6 Black PVC 50 78% 26
RG-58/U DT Belden YR29777 20 Solid Bare-Teflon 1000 30 20 0.031 BC 15.5 Solid FEP Teflon 0.112 0.19 Tinned Copper Braid 95% 4.4 Black PVC 53.5 ± 2.5 69.5% 28.5
RG-213 RG213 Belden 8267 13 Stranded Bare Braid-Poly-Mil Spec Q.P.I. 500/1000 111.1 13 0.089 Bare Copper Covered Steel 1.7 Polyethylene 0.285 0.405 Copper Braid 97% 1.2 Black PVC 50 66% 30.8
COAX SPECIFICATION COMPARISON
TECHNICAL CHARACTERISTICS OF INSULATION AND JACKET COMPOUNDS
TEFLON
This material has excellent electrical
properties, temperature range and
chemical resistance. It is not suitable
where subjected to nuclear radiation
and does not have good high voltage
characteristics. FEP Teflon is extrud-
able in a manner similar to PVC and
polyethylene. This means long wire
and cable lengths are available. TFE
Teflon is extrudable in hydraulic ram-
type process. Lengths are limited due
to amount of material in the ram, thick-
ness of the insulation and preform size.
TFE must be extruded over a silver- or
nickel-coated wire. The nickel- and
silver-coated designs are rated 260°C
and 200°C maximum, respectively. The
cost of Teflon is approximately 8 to 10 times
more per pound than PVC compounds.
POLYETHYLENE
(SOLID AND FOAM)
A very good insulation in terms of elec-
trical properties. Low dielectric con-
stant, a stable dielectric constant over
all frequencies, very high insulation
resistance. In terms of flexibility, poly-
ethylene can be rated stiff to very hard,
depending on molecular weight and
density — low-density being the most
flexible, and high-density, high-molecu-
lar weight formulation being very hard.
Moisture resistance is rated excellent.
Correct Brown and Black formulations
have excellent weather resistance.
The dielectric constant is 2.3 for solid
insulation and 1.64 for foam designs.
Flame retardant formulations are avail-
able with dielectric constants ranging
from about 1.7 for foam flame retardant
to 2.58 solid flame retardant polyethylene.
PVC
Sometimes referred to as vinyl or
polyvinyl chloride. Extremely high or
low temperature properties cannot be
found in one formulation. Certain for-
mulations may have -55° C to +105°C
rating. Other common vinyls may have
-20° C to +60° C. There are many for-
mulations for the variety of different
applications. The many varieties of
PVC also differ in pliability and electri-
cal properties. The price range can
vary accordingly. Typical dielectric
constant values can vary from 3.5 to 6.5.